Q85. Let A and B be two finite sets having m and n elements respectively. If m ≤ n, what is the total number of one-to-one functions from A to B?Mathematics — Sets, Functions and Groups — Question 85 of 232A. mnB. nmC. n! / (n − m)!D. n!Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →